Tackle-block



H. V. HARTZ. TACKLE BLOGK;

(No Model.)

No. 470,240. Patented Mar. 8; 1892.

her in which the block was made.

UNITED STATES PATENT OFFICE.

HENRY v. HARTZ, or CLEVELAND, OHIO.

TACKLE-BLOCK.

SPECIFICATION forming part of Letters Patent No. 470,240, dated March 8,1892.

Application filed June 3, 1891- Serial No. 394,930. I (No model.)

To aZZ whom it may concern.-

Be it known that I, HENRY V. HARTZ, a citizen of the United States,residing at Cleveland, in the county of Ouyahoga and State of Ohio, haveinvented certain new and useful Improvements in Tackle-Blocks; and I dohereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in tackle-blocks; and the object ofthe invention is to simplify, cheapen, strengthen, and generally improvethe construction of the block in the manner hereinafter fully described.

Heretofore in the process of producing tackle'blocks of the varietyshown herewith there has been required a great deal of welding to unitethe several diiferent parts of which it was composed, and then if anypart were accidentallybroken the block was either rendered worthless, orit had to be sent to a blacksmith-shop and undergo repairs, which wouldbe more or less expensive, according to the nature of the break.

My improvement contemplates the simplification of both the originalconstruction and of subsequent repairing by reason of the man- Thus mostof the parts are drop or press forged, and they are firmly buttemporarily united by a removable band or ring. This avoids weldingentirely and furnishes a construction in which a broken part can bequickly and easily replaced.

The invention therefore consists in a tackleblock composed of separableparts, substantially as shown and described, and particularly pointedout in the claims.

In the accompanying drawings, Figure 1 is a side elevation of asingle-sheave tackleblock constructed according to my invention. Fig. 2is a central cross-sectional view of the upper portion of the block andof a part of the sheave and rope. Fig. 3 is a plan view thereof omittingthe cheek-pieces and the sheave. Fig. at is a perspective view of theupper portion of the block shown in Figs. 2

- and 3 with the band and the shank of the hook in separate details.Fig. 5 shows apertermediate piece which adapts the block to the use oftwo sheaves. Fig. 6 is aplan-view of Fig. 5 with the binding-ring inposition, as seen in Figs. 2 and 8. Fig. 7 is a perspective view of theintermediate piece alone.

A represents the hook-straps, two of which are used with each block.These straps are fashioned, as shown, by drop or press forging insuitable dies, and have their upper portions bent an equal distance, asat a, to make room between them for the cheek-pieces B and the sheave O.Asemi-cylindrical section of a neck a is formed on the upper portion ofeach section A, and these together, when united, as seen in Fig. 2, bythe band or ring D around said neck, form a swivel-bearing for the hookE. The hook has the usual head 6, which comes within the inwardly-bentshoulders or portions Ct, and-bears beneath against the same to take theload, and acollar or bead e outside of the neck a. The shank of the hookis free to turn or swivel in the straps A, when the said straps arefirmly held together along their meeting edges, by the band D, and thesaid band is temporarily fastened in position by passing it over thehook in a heated condition and then shrinking it on the neck a. If thisbe not enough to hold it in place, a little riveting on the neck aaround the inner edge of the band will serve the purpose. The head 6 andcollar 8' of the hook-shank help to keep the straps or strap-sections Atogether vertically, while the band or ring D serves to keep them invertical relation.

The sheave-spindle F is supported in eyes in the lower ends of thestraps A, and the sheave O and the cheek-pieces B are supported on saidspindle between the said straps.

In Figs. 5 to 7 I show the invention adapted to a double tackle-block,in which two sheaves are employed. In this case I use an intermediate ordivision plate or piece H, which serves to'separate the sheaves and as acentral support for the sheave -spindle. piece, also, like the sidepieces or straps A, is drop or press forged into the shape shown, andhas a head h widened in all directions and provided withinwardly-projecting portions it, corresponding to the parts a of thestraps, and segmental portions h forming opposite and central parts ofthe neck of the block in which the hook-shank is held. Be-

This

neath and within the shoulders h is an open space for the head a of thehook-shank. The construction of the neck sections or portions a on thestrapsA is sucl1,when the intermediate piece H is used, that saidsections, together with the segments 7L2, will form a true circle, andthe ring D will encompass this neck thus constituted, the same as itdoesin the single block shown in Fig. 2. The head 6 of the hook comesbeneath the shoulders 71. and the shoulders at, and takes all the strainupon the block, so that no direct strain whatever comes on the ring D.This is true in both the forms of block shown.

By the foregoingconstruction a m uch lighter block is produced thanformerly With the same strength, and the cost of manufacture is reducedfully one-half. The lightness of the block makes it much more convenientin use, and the facility with which it' may be separated when any partis broken and again reunited is a material and popular advantage overthe old style of solid-welded block.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. The strap-sections each constructedwith a neck portion, a hook held in said neck, and

a ring around the neck, substantially as described.

2. The separate strap-sections forming the support for a sheave andprovided each with a part of the neck for holding the hook, incombination with a hook having a shank free to turn in said neck and ahead on its lower end, and a binding-ring about the neck, substantiallyas described.

3. The separate strap-sections and the division-plate formed each with apart of :1 cylindrical neck, a hook held in the neck, and

a ring around the neck, substantially as dc scribed.

4-. The strap-sections constructed at their upper ends to form a neck,ahook-shank having a head and a head between which said neck is held,and a ring around said neck for locking said sections together, incombination with cheek-pieces on said strap-sections and a sheave,substantially as described.

5. The separate strap-sections having neck portions and thedivision-plate midway between said sections, having projections formingthe middle part of the neck, a hook free to turn in said neck, and atightening-ring around the neck, substantially as described.

\Vitness my hand to the foregoing specification this 15th day of May,1891.

HENRY V. I'IARTZ.

\Vitnesses:

II. T. FISHER, H. L. MoLANn.

